Shoe-sewing machine.



J.RfscoTT. SHOE SEWING MACHINE.

APPLIGATION FILED JAN. 8, 1913.

2 SHEETS-SHEET 1.

Patented Feb. 2, 1915.

J. R. SCOTT.

SHOE SEWING MACHINE.

APPLICATION FILED JAN.8,1913,

Patented Feb. .2, 1915.

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`2 SHEETS-SHEET 2.

pin'rn spaans pnrnnrnncn f JACOB R. SCOTT, F NORTH 'WEYMOUTH, MASSACHUSETTS, A-.SSIGNORVTO UNITED SHOE MACHINERY COMPANY, 0E PATERSON, NEW JERSEY, CORPORATION 0F NEWTA JERSEY.

SHOESEWNG MACHINE.

Specification of Letters Patent.

ratentenncn. a, reis.

riginal application filed December 5, 1907, Serial No. 405,235? Dividedand this applcationiled January 8, 1913. Serial No. 740,764.

To'aZZ whom z'fmay concern: l

Beit known that T, Jnooeflt.A Soo'r'r, a citizen of the United States, residing at North Weymouth, in the county of Norfolk and Commonwealth of Massachusetts, have invented certain Improvements in Shoe- SewingMachines,A of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indieating like parts in the "several-figures.

This invention relates to shoe sewing machines, and more particularly to shoe sewing machines' in which the work is supported during the sewing operation by a horn which extends withinv the-shoe. Certain features of the invention, however, are not limited to this type of machinebut may be embodied with advantage in other shoe sewing machines.

The object of the shoek sewing machines with improved de'- vices for applying wax to the thread.

'With the above object inA view, the inven- 25 tion consists Ain the devices and combinations hereinafter described and particularly4 pointed out in the claims. s

ln the accompanying drawings illustrating a portion of a shoe sewing'machineembodying the novel features of'the invention in theirpreferred forms, Figure 1 is a longitudinal sectional view ofthe horn of the machine; 2 is a plan view of the base of the horn; and Fig. 3 is a centralcrosssectional view of the horn and vits stem', illustrating particularly the construction of the wax pot support in the horn and they ,heating appliances carried by the horn. v

The machine in which the preferred form of, the invention is embodied has the same general construction and arrangement of parts as the well-known McKay shoe sewing machine.,l This .machine is illustrated and described in` applicants Patent No. 1,050,568, granted January 14, 1913v on an application Serial No. 405,235, filed December 5, 1907, of which 'the present applica,

tion is a division. In the present application only the work supporting horn .ofthe machine, and the devices supported on the horn, have been illustrated. inasmuch as this illustration is considered sutlicient to give a clear understanding of the invention.

invention is to provide tapers slightly, and from the lower end of` the tapered portion two concentric sleeves 6 and 7 extend downwardly through a stationary bushing 8. The inner sleeve y7 eX- tends below the outer sleeve 6, and'at its lower end is journaled in a bushing 9 mounted in a projection 10 frame.

from' the l machine The whirl is of the usual construction, and

has the usual operation. .Tt is mounted ,in

the tipfof the horn, and is driven by la pinion on the upper end of an inclined shaft -11 in the upperV end of the horn. The inclined shaft 11 is driven from a verticall shaft 12 in the horn, which shaft is provided with a pinion 13 at its lower end in the base of the horn which is driven through two intermediate gears 14 from a .gear 15 on a vertical shaft 16 extending through the center 'ofthe stem ofthe horn. This shaft passes through the sleeves/6 and 7 at the lower end of the stem, and is rotated through suitable connections yfrom. the cam shaft of the machine. f y

The heating apparatus of the machine comprises a heating chamber 17 mounted in the horn at one side of the vertical shaft 12, and a plate 18 provided with 'heating chambers in the base of the horn in osition to form a support for the waXpot to rest upon. Steam isI supplied to the heating chambers as follows: Supply and exhaust pipes 19, 2O lead to the bushing 8 througll which the sleeves 6 and 7 at the lower end of the stem of the horn pass, and these" pipesI connect with passage ways leading to` circular channels "21 and 22 on the inner surface of the bushing. These channels connect by'means of passage ways in the inner sleeve 7 Ato pipes 23 and 2 4 located on opposite sidesi'of' thehstem of the horn and connected at` their upper ends to the chambers roo in the heating plate 18 upon r'which the'iwax pot rests. These kchambers are connected by Pipes 25 and 26 to .the heatingchambers 17 of the horn. i

The wax pot 27 rests upon'the'heating plate 18 in the base of the horn, and' is pro; vided with a horizontal shelf 28 extending from, its lower end upon which'the thread holder`29 is supported. A clamping screw 30 `extends upwardly throughma slot 3l in the base of the horn into' this shelf, and serves as' a vmeans for securing the wax pot in position. The slot permits the wa'X pot to be moved outwardly on the base of the horn so that access can readily be had to the parts in the horn beneath thep'ot. Secured to the under side of the cover of the wax pot is a casting, shaped to form two vertical tubes 32 through which the thread 33 passes in enteringand leaving the pot, the upper ends of these tubes extending through holes in `the cover of the pot. At their lower ends the tubes are connected by a shelf 34 which slopes/downwardly on each side from the center and forms a roof over the thread passing through the pot to prevent any unmelted lumps of waX from sinking down into Contact with the thread. Below the shelf the'thread passes over two guide rolls 35 supported in projections from the casting andthrough holes formed in projections 36 from the shelf, which holes act as strippers v.project upwardly fromI the, VVVbottom of the wax pot and contact with the outer edges of the shelf A hinged lid 38' on the cover :of the wax dpot permits fresh wax to be placed in the pot without removing the entire cover. passes from the wax pot it passes over a guide roll 39 and under a stripper 40 supported on the upper side of the cover between two walls 41 projecting from the cover. `A removable casing 42 fits over the walls 41 and ineloses the stripper ,110A and guide roll 39. From the guide-roll 39 the thread passes downwardly around a tension wheel and then upwardly over a tension roll mounted in a spring pressed arm and then over a guide roll in the horn and through the eye of the whirl.

Having explained the nature and object of the invention, and having specifically described the preferred embodiment thereof, what is claimed is 1. A wax pot for shoe sewing machines, having, in combination, two tubes through which the thread enters and leaves the pot, a shelf connecting the lower ends of the tubes and forming a roof over the thread, thread guides beneath the shelf, and perforated wallsextending from the shelf to the bottom of the pot on each side of the thread.

. 2. A wax not for shoe sewing machines, having, in combination, two tubes through which the thread enters and leavesthe pot connected at their upper ends to the cover of the pot, a shelf connecting the lower As the thread` ends of the vtubes and forming a roof over JAoeB n. soorfr. Witnesses FRED U. FISH, CHAUNCEY M. SINCERBEVAUX. 

